Granted Patent
Utility
US 5,939,516 · App. 08/335,855
Modified polyester polymers
Inventors:
Sarah Jennifer Greaves, David A. Harrison, Kenneth M. Jones
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jan 12, 1995
Inventors
Sarah Jennifer Greaves
David A. Harrison
Kenneth M. Jones
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.